I will never forget one Saturday morning in the Michigan UP summer, driving out to my favorite bass fishing lake, and casting a line as a fog drifted over the lake. It had rained the last two days, and it was still overcast. As I was reeling in my spinner, two loons started calling each other from other sides of the lake. Their calls echoed across the water and through the woods. It was a perfect moment. I now live in Colorado, and no loons. But I miss that sound dearly. It triggers something deep inside, it's primeval and forlorn, but peaceful at the same moment. So what are your favorite sounds from nature? Campfires? The sound of a deer walking up on your blind? Coyotes howling in the dark?